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Just got a popup notification in my Google Search Console that says:

Your site has been switched to Mobile First Indexing
The majority of Google's crawl requests to your site will be made using a mobile crawler.

Switch date: July 10, 2018

The notification is just a little late to the party.

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A compact, practical add-on for this thread: when Search Console shows a mobile-indexing-related message for any property (as saw), the useful next step is not worry about the notification text but run a short technical checklist to make sure the mobile version really contains everything Google needs for indexing and rich results. See Google's official mobile-first guidance for the full rationale and examples. Mobile-first indexing best practices. (developers.google.com)

Quick checklist (action-first)

  • Confirm visible content parity: same primary text, images, captions, and important links on mobile as on desktop.
  • Keep identical metadata and structured data on mobile pages (title, meta description, schema).
  • Do not block CSS/JS/images in robots.txt; Google needs them to render pages.
  • Avoid lazy-loading essential content behind user interaction; use server-side rendering or progressive hydration if needed.
  • If you use separate mobile URLs (m-dot) follow the rel=canonical / rel=alternate and hreflang pairing rules and verify both properties in Search Console. (developers.google.com)

Quick verification workflow in Search Console

  • Use the URL Inspection tool → Test Live URL → View the rendered HTML and screenshot to confirm Googlebot Smartphone can see the same content; fix blocked resources or noindex tags and re-test.
  • After fixes, request indexing and monitor the Coverage/Enhancements reports for structured-data or resource errors. Google’s debugging pages explain these steps. Debug your pages / URL Inspection guidance. (developers.google.com)

Short cautions: prioritize parity over cosmetic differences, and give Google time to recrawl after changes.

Member Avatar for Dani

Oh nevermind!! I was accidentally looking at a property that I never look at, so I really had not dismissed the notification since 2018.

commented: Was about to comment this on why it took that long for google. +0
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